Plunger for gas recovery by discharging water in gas well

• Main Authors: CHEN DEJIAN, YANG XUDONG, YU ZHIGANG, JIA YOULIANG, YANG YACONG, ZHANG SHUPING, YAN YINGFEI
• Format: Patent
• Language: Chinese; English
• Published: 14.11.2012
• Subjects: BLASTING; EARTH DRILLING; EARTH DRILLING, e.g. DEEP DRILLING; FIXED CONSTRUCTIONS; HEATING; LIGHTING; MECHANICAL ENGINEERING; MINING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS; POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS; WEAPONS

The utility model discloses a plunger for gas recovery by discharging water in a gas well which is designed to overcome a problem that a conventional plunger is only suitable for vertical wells. The plunger for gas recovery by discharging water in the gas well mainly comprises a fishing neck, a primary universal ball joint, a secondary universal ball joint and a located device 4. The plunger for gas recovery by discharging water in the gas capable of fishing is simple in structure and convenient in usage and is adapted to gas recovery by discharging water in the gas well of a directional well. The ball pins of the universal ball joints utilize that the ball heads of the universal ball joints can rotate and swing freely in the housings of the universal ball joints, so that the plunger realizes ascending and descending in a winding manner with an oil pipe. Besides, the stage number of the universal joint structure of the plunger can be increased and decreased at will in dependence on production needs.